Smoke conveyer



Jan 7, l930 A. A. wAJDA ETAL 1,743,009

SMOKE CONVEYER Filed Dec. 19, 1927 2 Sheets-Shet 2 INVEN TOR.

Patented Jan. 7, 1930 UNITED STATES PATENT OFFICE ALBERT A. WAJ'DA AND EDWARD J. BARTOWSKI, OF WISSAHICKON, PHILADELPHIA, PENNSYLVANIA SMOKE CONVEYER Application led December 19, 1927. Serial No. 241,229.

This invention relates to av device for removing and collecting products of combustion, such as smoke, and other matters, from a furnace stack or outlet fine without interfering with the consumption of fuel, and has for its object to provide a device of such class for efhciently removing the products of combustion from the stack to prevent them discharging at the outlet end of the stack thereby overcoming the objection due to the dissipation of such products into the atmosphere, as it is well known by those skilled in the art that in the operation of boilers and other indus-V trial furnaces that great quantities of smoke are frequently emitted therefrom. This smoke often contains minute particles of carbon, sulfurous dioxide and other impurities, which are often the cause of litigation and compliants by persons in the vicinity of the furnace and often cause disturbance for dis*- tances therefrom.

Further objects of the invention are to provide, a device for the purpose referred to which is comparatively simple in its construction and arrangement, strong, durable, compact, thoroughly efficient in its use, readily installed with respect to a stack, and comparatively inexpensive to set up.

lVith the foregoing and other objects in view the vinvention consists ofthe novel construction, combination and arrangement of parts as hereinafter more specically described, and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which fall within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views: Y

Figure 1 is a longitudinal sectional view of the device or apparatus for the purpose set forth and in accordance with this invention showing the adaptation thereof with respect to a stack.

Figure 2 is a section on line 2-2 Figure 1.

Figure 3 is a section on line 33 Figure 1.

Figure 4 is a section on line 4-4 Figure 1.

Figure 5 is a fragmentary view. in vertical section, of a modification showing the adaptation thereof with respectto a stack.

Figure 6 is a section on line 6-6 Figure 5.

Figure 7 is a section on line 7-7 Figure 5.

Referring to Figure 1 of the drawing 1 indicates conventionally a furnace stack or outlet flue provided with an opening 2 for the passage of the products of combustion from the furnace thereto. Supported in spaced relation with respect to the upper end of the stack 1 is a hollow cone shaped hood 3 of a diameter greater than the diameter of the stack. Spaced standards 4 are provided for supporting the hood 2 and are fixedly secured to the latter and to the upper end of the stack 1.

Positioned within the stack 1 is a suction pipe 5, of any suitable cross'section, preferably semi-oval in contour and which opens at its upper end kinto a suction head referred to generally at 6 and also of oval contour. The length of the head 6 corresponds to the inner diameter of the stack 1. The ends of the head 6 abut against diametrically opposed portions of the inner face of the stack. As the head 6 is of oval contour the passages 7 and 8 are formed between the head and the stack 1. The suction pipe 5 opens into one end of the head 6 at the bottom thereof. The'lower end of the pipe 5 is formed with an outwardly extending right angularly disposed outlet portion 9 which opens through the stack 1 and is coupled to a pipe branch 10, which opens into a suction device 11 operated from a motor 12. Communicating with the suction device 11 and extending therefrom is a conducting pipe 12 which opens into a collector referred to generally at 13.

The suction head 6 comprises a closed top,

semi-oval shaped casing consisting of a curved wall 14, a iiat wall 15 and a top wall 16. The casing corresponds in contour to the shape of the suction pipe 5 and the latter has its upper end formed integral with the walls 14, 15. The top wall 16 of the casing is flush with the top of the stack 1. rFhe wall 15 is provided with a series of openings 17. Extending from the wall 15 is a semi-oval shaped shell '18 of less height than the height of the wall 15. The shell 1S is formed with inturned flanges 19 `Which arel secured to the Wall 15. The shell 18 forms a continuation of theWall 14, of the casing. The bottom edge of the shell 18 is flush with the bottom edge of the Wall 14. Interposed between the shell 18 Vand the Wall isa series of pairs of spaced Y connected together by an imperforate closure 24 Whichis secured in an opening 25 formed in the shell 18. The other ends of the plates of cach pair are secured in an opening 17 in the Wall 15. Each Vpair of plates in connection with its-top, bottom'and end closures provide an intake channel 26 which opens into the chamber 27 provided by the semioval shaped casingformed by the Walls 14, 15 and 16. V

On the operation of the suction device 11, the products of combustion passing up the stack Will be drawn through the openings 21 into the channels 26, and from these latter through chamber 27, pipe 5, suction device 11, pipe branch 12 to the collector 13. The pipes 5 and 12 in connection With the suction device 11 provide a conducting line for the products of combustion from the suction headto the collector.

Referringl to Figures 5, 6 and 7, a stack is indicated at 53 having an intake 54 for the products of combustion. Mounted upon the upper end ofthe stack` 53 and 'arranged in spaced relation with respect thereto 1s a hood 55. The stack 53, in proximity to its upper end, isformed with. openings 56 and communicatingftherewith'is a chamber 57, formed by a'casing 58, having depending therefrom a suction pipe v59, which leads to the suction device 11. The suction'pipe 59 opens into vthe `chamber 57. Arranged Within the stack s 53, is a series of pairs of spaced plates 60,

each of the plates Vbeing formed with a series V of intake openings 61. Each pair of platesis connected together Vat its top by an imperforate closure 62, at thebottom by an imperforate closure 63, and at one end by an imperforate closure 64. Each pair of plates in connection with its closures provides a conducting channel 65 which communicates withl the chamber 57, through an opening56. The plates 6() are arranged Within, extend across and are fixedly secured to the inner face of the stack, otherwise than stated the constructionshown in'Figures 5,-6 and 7 would be the same as that shown in Figures 1 to 4 inclusive.

In the form shown in Figure 5, the products of combustion are drawn into the channels 65 through the intake openings 61,' and conducted by the suction pipe to the suction device and from there are discharged into the collector.

lVhen the device 11 is in operation, the action will be such on the products of combustion passing up the stack, that they Will be prevented from discharging at the upper end of the stack, but will be drawn into the channels 26, 65 and from there Will be conducted to the collector. Y Y

The plates 60 and casing 58 provide a suction head for the upper Vend of the suction pipe 59.

The construction and arrangement of the several forms of the device shown, provides a thoroughly eiicient means for removing the products of combustion from the stack to prevent them from discharging at the outllet end of thestack under such conditions` overcoming the objections due to the dissipa-v tion of such products into the atmosphere,

and therefore it is thought the many advantages of a device or apparatus, in accordance with this invention, can be readily understood,l and although the preferred embodiment ofthe invention is asillustratedY and described, yet it is to be understood that changes iny the details of construct-ion can be had which will fall Within the scope of the invention as claimed.

What We claim is 1. In a means of the suction type for removing the products of combustion from a j furnace stack, a suction head adapted to be secured to the upper portion of the stack and forvcommunication with a suction device,

`said head comprising a chamber and a plu? rality of spaced channels, said channels opening at one end into said chamber, each of said channels including a closed top and bottom, an end Wall and a pair of sidewalls, said side Walls formed with intake openings forthe entrance of the products ofcombustionfrom the stack to the channels. y

' 2. `In a means of the suction type for removing the products of combustion from a furnace stack, a suction head adaptedfto be positionedin and secured to theupperportion Vof the stack, said head comprising a chamber Vand a plurality of parallel, spaced channels opening at one end into said chamber, each of Y- said vchannels having its other end, top and bottom closed and furtherincluding a pair .-1115 i of side Walls, said side Walls provided WithV intake openings for the entrance of the prod'- ucts of combustion from the stack to the channels, a suction device, and a pipe leading from i' said chamber to said device.

3. In a means of the suction type for removing the products ofV combustion from a furnace stack, a. suction head adapted to be p positioned in and secured to the upper portion of the stack, said headcomprising a/ chamber and a plurality of parallel, spaced channels opening at one end into said cham-` ber, each of said channels having vits other Y end, top andV bottom closed and further in-y cluding a pair of side Walls, said side walls provided with intake openings for the entrance of the products of combustion from the stack to the channels, a suction device, a pipe leading from said chamber to said device, and said head being of oval contour and of a length corresponding to the inner diameter of the stack.

4. In a means of the suction type for removing the products of combustion from a furnace stack, a suction head adapted to be secured in the upper portion of the stack and for communication with a suction device, said head comprising a semi-oval shaped casing having an open bottom for communication with the suction device and providing a chamber having one wall thereof formed with a series of openings, a semi-oval shaped shell extended from said wall, a series of spaced pairs of vertically disposed plates interposed between said wall and said shell, imperforate means secured to the topand bottom of each pair of plates to provide in connection therewith channels, the openings in said wall establishing communication between said channels and said casing, and each of said plates provided with openings for establishing communication between the channels and the stack.

5. In a means of the suction type for removing the products of combustion from a furnace stack, a suction head adapted to be secured in the upper portion of the stack and for communication with a suction device, said head comprising a semi-oval shaped casing having an open bottom for communication with the suction device and providing a chamber having one wall thereof formed with a series of openings, a semi-oval shaped shell extended from said wall, a series of spaced pairs of vertically disposed plates interposed between said wall and said shell, means secured to the t-op and bottom of each pair of plates to provide in connection therewith channels, the openings in said wall establishing communication between said channels and said casing, each of said plates provided with openings for establishing communication between the channels and the stack, and said casing forming a continuation of said shell to provide a semi-oval shaped unit of a length corresponding to the inner diameter of the stack.

6. In a means of the suction type for removing the products of combustion from a furnace stack, an oval-shaped suction head adapted to be secured in the upper portion of the stack, said head comp-rising a semi-ovalshaped casing open at its bottom and providing a chamber; a semi-oval shaped shell extended from one side of the casing, means arranged within the shell and abutting said side to provide a series of spaced channels, said channels having the side walls thereof provided with openings for establishing communication between the channels and the stack, and said side of said casing provided with openings for establishing communication between the channels and said chamber, a suction device, and a pipe leading from the bottom o-f said chamber to said device.

In testimony whereof, we affix our signatures hereto.

ALBERT A. 'WAJDA EDVARD J. BARTKOWSKI. 

